Île-de-France (Paris)
September
Weather in Île-de-France for September 2025
Your guide to Île-de-France weather in September - trends and predictions
In general, the average temperature in Île-de-France at the beginning of September is 27.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.9 °C by the end of September.
Expect significant rainfall in Île-de-France during September, with an average of 20 rainy days.
Is September a good time to visit Île-de-France? check out the best time to travel to Île-de-France page.
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Temperatures
Rain 🌧️
More
10
Dry days
20
Rainy days
0
Snow days
23°/14°
Temperatures
15 km/h
Avg max wind
60 %
Avg humidity
Île-de-France in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  27° | 2  26° | 3 26° | 4 27° | 5  27° | 6  29° | 7 29° |
| 8  27° | 9 25° | 10 25° | 11 23° | 12 23° | 13 24° | 14 23° |
| 15 24° | 16 22° | 17  22° | 18 21° | 19 22° | 20 21° | 21 21° |
| 22 20° | 23 21° | 24 19° | 25 20° | 26 20° | 27  19° | 28 18° |
| 29 17° | 30 19° |
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Temperatures trend during September in Île-de-France
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Partly cloudy | 27° /16° | 1.5 mm | 6 | |
| 2 Sept. | Patchy rain possible | 26° /15° | 3.6 mm | 6 | |
| 3 Sept. | Patchy rain possible | 26° /16° | 0.2 mm | 6 | |
| 4 Sept. | Patchy rain possible | 27° /16° | 1.3 mm | 6 | |
| 5 Sept. | Moderate rain at times | 27° /17° | 4.6 mm | 6 | |
| 6 Sept. | Sunny | 29° /17° | 2.4 mm | 7 | |
| 7 Sept. | Sunny | 29° /17° | 3.1 mm | 7 | |
| 8 Sept. | Overcast | 27° /17° | 4.3 mm | 6 | |
| 9 Sept. | Patchy rain possible | 25° /17° | 1.4 mm | 6 | |
| 10 Sept. | Moderate rain at times | 25° /16° | 0.7 mm | 6 | |
| 11 Sept. | Partly cloudy | 23° /15° | 0.6 mm | 6 | |
| 12 Sept. | Sunny | 23° /13° | 1 mm | 6 | |
| 13 Sept. | Patchy rain possible | 24° /14° | 0.6 mm | 6 | |
| 14 Sept. | Moderate or heavy rain shower | 23° /15° | 9.4 mm | 6 | |
| 15 Sept. | Moderate rain at times | 24° /14° | 2.1 mm | 6 | |
| 16 Sept. | Sunny | 22° /13° | 0.1 mm | 6 | |
| 17 Sept. | Cloudy | 22° /13° | 0.3 mm | 5 | |
| 18 Sept. | Patchy rain possible | 21° /13° | 0.2 mm | 5 | |
| 19 Sept. | Partly cloudy | 22° /13° | 0.2 mm | 5 | |
| 20 Sept. | Patchy rain possible | 21° /12° | 1.3 mm | 5 | |
| 21 Sept. | Overcast | 21° /12° | 3.2 mm | 5 | |
| 22 Sept. | Light rain shower | 20° /11° | 3.3 mm | 5 | |
| 23 Sept. | Sunny | 21° /11° | 1.7 mm | 5 | |
| 24 Sept. | Cloudy | 19° /12° | 3.5 mm | 5 | |
| 25 Sept. | Patchy rain possible | 20° /12° | 5.7 mm | 5 | |
| 26 Sept. | Patchy rain possible | 20° /13° | 4.9 mm | 5 | |
| 27 Sept. | Heavy rain at times | 19° /12° | 1.8 mm | 4 | |
| 28 Sept. | Patchy rain possible | 18° /11° | 0.6 mm | 4 | |
| 29 Sept. | Moderate or heavy rain shower | 17° /10° | 2.4 mm | 4 | |
| 30 Sept. | Sunny | 19° /9° | 0.3 mm | 5 | |
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Important Notice
Our weather forecast for Île-de-France in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Île-de-France forecast closer to your planned date for the most up-to-date weather information.
Île-de-France in September - FAQ
What are the expected maximum and minimum temperatures in Île-de-France during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Île-de-France during September?
Moderate rainfall is anticipated in Île-de-France during September, with a total of 66.035 mm spread over approximately 20 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Île-de-France during September?
The average wind speed in Île-de-France during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Île-de-France in September?
As you prepare for your trip to Île-de-France in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Île-de-France, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
September rainfall patterns in Île-de-France
Explore the daily rainfall trends and prepare for Île-de-Frances September weather 💧
UV exposure in Île-de-France during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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